You could avoid that problem by assigning the index to the first undef slot, rather than straight incrementing: 

my $instance_index = List::Util::first { !defined $_ } @name;

[download]

You end up, though, with an O(n) constructor. But perhaps the savings in access make up for this.

In reply to Re^4: inside-out objects using arrays? by fishbot_v2
in thread inside-out objects using arrays? by rvosa

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